... for them. Therefore, buildings can be likened to human skin (a second skin), or an exten- sion of our bodies as the third skin (considering the body as the first skin and clothes as the second ... aware of environmental pollution, acid rain, depletion of ozone, global warm- ing, additives in food, CFCs, so their awareness of the impact of the places in which they live and work is increasing. ... factors influence the indoor environment within buildings, including the choice of building mate- rials, infestation by insect, pests and other forms of biological organisms and the efficiency of...